Approved i140 and 485 revoked

Hi All,

My GC got approved on july 2012 and now I got email saying that approved I140 and 485 has been revoked.

Is there any thing that I can do here. It is alsmost 6 months now after GC approval and now i am struggling to find what to do. Can some one guide here and would be appreciated.

I yet get the notice,